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  1. Bug #1197648
  2. Comment #8

Comment 8 for bug 1197648

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Rongze Zhu (zrzhit) wrote : Re: LVM Unable to clone a volume

self.db.volume_update() will clear the exc_info, I traced the code and found out the invoked function "engine.connect()" will clear the exc_info.

volume_update -> get_session() -> get_engine() -> create_engine() -> engine.connect() .

I think sqlalchemy have some side effect, it will clear exc_info.